Moment
Parse, validate, manipulate, and display dates in javascript.
Socket.io
Realtime application framework for Node.JS, with HTML5 WebSockets and cross-browser fallbacks support.
Video.js
Universal video embed.
Chart.js
Simple HTML5 Charts using the <canvas> tag
Cypress
Fast, easy and reliable testing for anything that runs in a browser.
Webpack
Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jade, coffee, css, less, ... and your custom stuff.
Ionic
Advanced HTML5 Mobile App Framework. A beautiful front-end framework for developing hybrid mobile apps in HTML5. Best friends with AngularJS.
Code Mirror
In-browser code editor
Nuxt.js
The Vue.js Developers Framework
Animate.css
Cross-browser CSS3 animations. Plug and play. Do a little dance.
Pixi.js
Super fast HTML 5 2D rendering engine that uses webGL with canvas fallback
Reveal.js
The HTML Presentation Framework
Leaflet
JavaScript library for mobile-friendly interactive maps
Typeorm
ORM for TypeScript and JavaScript (ES7, ES6, ES5). Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, WebSQL databases. Works in NodeJS, Browser, Ionic, Cordova and Electron platforms.
Angular.js
AngularJS lets you write client-side web applications as if you had a smarter browser. It lets use good old HTML (or HAML, Jade and friends!) as your template language and lets you extend HTML’s syntax to express your application’s components clearly and succinctly
Dayjs
⏰ Day.js 2KB immutable date library alternative to Moment.js with the same modern API
Incubator Echarts
A powerful, interactive charting and visualization library for browser